| A | B |
| number model | a number sentence, expression, or other representation that models a number story |
| even number | a counting number that is divisible by 2 |
| odd number | a counting number that is not divisible by 2 |
| factor rainbow | a way to show factor pairs in a list of all the factors of a number |
| prime number | a whole number that has exactly two factors; one and itself |
| square array | a rectangular array with the same number of rows and col;umns |
| prime factorization | a whole number expressed as a product of prime factors |
| product | the result of multiplying two numbers called factors |
| quotient | the result of dividing one number by another number |
| exponent | a small, raised number in exponential notation that tells how many times the base is to be multiplied by itself |
| square number | a number that is the product of a number multiplied by itself |
| factor | one of two or more numbers that are multiplied to give a product |
| divisble by | one whole number is divisible by another whole number if there is no remainder when you divide |
| composite number | a whole number that has more than two factors |
| exponential notation | a way to show repeated multiplication by the same factor |
| remainder | an amount left over when one number is divided by another number. |